Vaporizer



H. F. SIMON.

Dec. 11 1923,

VAPIORIZER Filed Sept. 16 1921 PatentedDecl 11, 1923. 1,476,774] UNITED STATES PATENT OFFICE. f

HERMAN FREDERICK sIMON, OF FITCHBUBG, MASSACHUSETTS, ASSIGNOR TO PABKS- I ,CRAMER COMPANY, OF BOSTON, MASSACHUSETTS, A. CORPQRATION 01 MlLSSA- CHUSETTS- varomzna.

Application filed September 16, 1921. Serial at. 501,216,

To all whom, it may concern: tion efficiently, at very careful adjustment Be it known that I, HERMAN Fnnonmon has been necessary, whichrequired the at- SIMON, a citizen of the United States, and tendance of a skilled operator. resident of Fitchburg, county or" -Worcester, One of the objects of the present invena State of Massachusetts, have invented an tion is to provide a vaporizer of this type in 60 Improvement in Vaporizers, of which the which means are rovided for properly corir'ollowing description, in connection with relating the relatlonbetween the nozzle and the accompanying drawing, is a specificathe outlet so that the device may be as- .tion, like characters on the drawing represembled by unskilled workmen, and when m senting like parts. 7 assembled will operate at its highest efii- Jilhis invention relates to improvements ciency without-the necessity'of any'adjust- 1 in vaporizing apparatus, particularlysuch ment. Y

as are employed for imparting, additional A further objector-the invention is to moisture to the air of an enclosure such as provide a more economical'construction in a textile factory, where it'is desirable to which the parts of the vaporizer may be we increase the natural humidity of the'air. formed as solids of revolution constructeil More specifically, the present invention rev from bar stock u on automatic machines,

lates to improvements in vaporizing heads "such-as screw inac ines. of the turbo type,,exemplified by the dis- Other objects and features of the invenclosure in Patent No 869,945, granted tion will more fully appear from the 01- it November 5, 1907 to Albert W; Thompson. lowing description and the accompanying The turbo type of vaporizer comprises drawings, and will e'pointed out in the ahead having a cylindrical chamber and an claims. =1 apertured stem having a duct leading tan- A preferred embodiment of the invention 2 gentially into said chamber, through which is'illustrated in the accompanying-drawings, 80

a gaseous fluid under pressure, such as comin whichpressed air, is introduced. The end wall v Fig. 1 is a side elevation of-a vaporizer of the chamber is provided with a central head embodying my invention. outlet. In prior constructions, the walls of Fig. 2 is an end elevation viewed toward. the chamber have extended through the opthe outlet.

posite side of the head, and have been Fig.3 is a vertical, longitudinal, median screw-threaded to engage complementary sectional view. screw threads upon a liquid inlet member Fig. 4 is a transverse sectional view taken having a nozzle in axial alignment with the on planes indicated by the broken line H, outlet aperture in the head. The inlet Fi 3. i 1

member has been usually rovided with a The vaporizer illustrated herein com central duct extending through a stem, prises a, head 1 preferably of spheroidal which is connected with a suitable water form, having a stem 2, provided with an supply pipe, in which a, level of water is enlarged base portion 3, having a screw- 40 maintained at a short distance below the threaded periphery 4 adapted to be conlevel of the duct in the liquid inlet member. nected by a suitable union to a supply for a By reason of this construction, the fluid gaseous fluid under pressure such as a comunder pressure rushing through the champressed air line. The stem 2 is provided her, assumes a whirling motion, and issues with a chamber 5, extending in proxlmlty from the outlet in a conoidal vortical form. to the head, and communicates with the The air thus rushing past the nozzle creates head through a relatively small duct or a suflicient vacuum to draw the liquid aperture 6, which leads tan entially into a through the inletductv nozzle by inspiracylindrical chamber 7 in t e head. ThIS tion. As the liquid issues from the nozzle duct ma be produced by placingthe'head 50 it is atomized or vaporized by the vertical in a jig and drilling from the aperture :5

current of air issuing from the outlet in the through the head at an angle to the axis head. In previous constructions,- means of the stem 2, or if desired, it may be have been provided foradjusting the posidrilled parallel to the ax1s of the 'stem 2 tion of the nozzle relatively to the outlet, and ofi'set sufiicientl'y to enter the chamber 55 and in order that the vaporizer shall functangentially to its periphery as above dea larger boring tool, or an enlarged section scribed The cylindrical chamber, 7 is provided with an end wall- 8 "having acentral circular outlet 9.

' The chamber 7 may be formed by boring through the head along an axis at right angles to the axis of the stem 2. Desirably of the boring tool, is employed to counter bore a portion of the distance through the head. The counter bored portion desirably screw-threaded-end portion 13, adapted tobe engaged by a suitable union for coupling the same upon a liquid supply pipe, such as a branch of a water main. Italso desirably is provided with an'angular portion 14,

adapted to be engaged by a wrench. The portion of the inlet member which enters the counter bored portionof the head, 1s

provided with screw threads 15 compleshoulder 11 in thehead.

m'entary to the screw threads 10, and with a shoulder 16 complementar to the tapered he end portion 17 of the inlet member is of smaller diameter, and preferably tapered, and terminates in a preferably tapered nozzle 18, which'ex tends into the outlet 9 of the head. The

inlet member isprovided with an axial aperture '19, which communicates with an axial duct 20 extending through the nozzle portion. The shoulder 11 in the head and the shoulder 16 upon the inlet member are so disposed that when said shoulders are in engagement, the nozzlewill be properly correlated with reference to the outlet, to cause the vaporizer to operate at its highest efficiency at predetermined pressures ofthe gaseous fluid under pressure and the liquid.

In the present invention, the necessity for great accuracy is eliminated in certain parts, such as the threaded portions, which in the old construction were necessarily air-tight and consequently had to be made up to fit 'very ti htly. In the present construction,

the seating of the shoulder of the inlet member upon the complementary shoulder in the head when a screwthreaded connection having reasonable tolerance is employed,

produces an effective seal against leakage through the thread, and at the same time' accurately centers the water inlet member so that it registers properly with the outlet. This is particularly true where the shoulders are bevelled, as illustrated in the accompanying drawings. By reason of this construction, very much reater tolerance in the threaded portions 0 the inlet member and head is permissible so that, whereas in the old construction the fit between the threaded portions was such as to require screwing in with a wrench, in the present construction, a tight seating between the shoulders may be roduced by screwing up the parts by hand 1 The shoulder inlet member and the complementary shoulder upon the seat also constitpte surfaces for gaugin r and jigging by means of which it is ossib e so to correlate the length of the inlet tip and the depth of the air chamber that the relative position of the tip with reference to the outlet when finall assembled, can be positively determine This feature makes it possible to manufacture duplicate and interchangeable parts in unlimited quantity, and at the same time secures the advantage that when as sembled, the device can assume and will function in one position only, in which the relative sizes/and positions of the parts will always correspond to predetermined capac ity, and will assure a maximum efficiency. This'is very important for it will be understoodthat a very slight change in the lateral position' of the nozzle in relation to the air chamber-7 outlet makes a very appreciable change in the rate at which the air escapes from the. chamber. in the head, and in the suction which determines the rate of flow of the water, and therefore in the amount ofair consumed and of the amount of water atomized, and of the efficiency of the vaporizer,that is, the fineness of the atomized spray. f

Experience has proved thatin the previous construction, the head must be very carefully adjusted by turning the inlet member in and out with a wrench to its position of best efficiency, and unless maintained in that position, serious changes in evaporative capacity dualityof spray, and air consumption wou d result.

In va ,orizers of the present construction, di erent sizes of outlets upon a predetermined "graduated scalev may be employed to secure different capacities, so that the finished article can be and must be, when assembled, operated at the predeterininer'l capacit and efficiency for which it was ori ina y designed.

aving thus described my invention, what I claim is new and desire to secure by Letters Patent is:

1. A vaporizer comprisingra head having a circular chamber, provided with a tangential inlet for the admission'of a gaseous fluid, under pressure, and an axial outlet at one end of the chamber, an inlet member for a liquid, mounted on said head, having; a

' tapered nozzle extending through said chamber into and concentric with'said outlet, and means within said head for positioning said nozzle concentrically and in a predetermined and fixed correlation to said outlet and acting to provide an air-tight joint. .i

2. A vaporizer comprising a head having a circular chamber, provided with a tangential inlet for the admissionof a gaseous fluid under pressure, an axial outlet at one end of the chamber, an inlet member for liquid mounted on said head, havin a tapered nozzle extending throu h said 0 amber into and concentric with said outlet, and engaging shoulders within said head and upon said liquid inlet member located at a distance from said outlet for positioning saidnozzle concentrically and in a predetermined correlation to said outlet and acting to pro- 7 vide an air-tight joint.

tial inlet for the admission of a gaseous fluid under pressure, and an axial outlet at one end of the chamber, a counter-bore co-axial with said chamber, having a screw-threaded wall and presenting a shoulder at itsjunction with the wall of said chamber, an inletmember for a liquid having a'screwthreaded portion engaging the; screwthreaded wall of said counter bdre with tolerance, a tapered nozzle of reduced diameter extending through said chamber concentrically into said outlet, and a shoulder. complementary to the shoulder on said head, so located as to position said nozzleconcentricall and in a predetermined correlation to sai outlet.

4. A'vaporizer comprisin a head having a circular chamber, provide with a tangential inlet for the admission of a gaseous fluid under pressure, and an axial outlet, a counter-bore co-axial with said chamber,

having a screw-threaded wall presenting a conical shoulder at its junction with the wall of said chamber, an inlet member for a liquid having an axial duct and prowided with a screw-threaded portion engaging the screw-threaded wall of said counter bore, a

tapered nozzle of reduced diameter extending through said chamber concentrically tight Joint.

i.- A vaporizer comprisin a head having a circular chamber, provlde with a tangen area, andcomplementary positioning vided with an axial outlet, a porttle'ading from the aperture in said stemtangentially into said chamber, a counter bore of larger diameter. extending into said head co-axial with said chamber, presenting a tapered shoulder at its junction with the wall of said chamber, an inlet member for a liquid also formed of a solid of revolution, provided with a portion to fit said counter bore, a

shoulder complementary to the shoulder in i said head, and a tapered nozzle of relatively smaller diameter extending through said chamber concentrically into said outlet, said shoulders being so'positioned when engaged as to provide a predetermined correlation between the affective area of the passage through said nozzle and that of said outlet to position said nozzle accurately c0ncen-' trically of 52nd outlet and to provide an air- 6. A vaporizer comprising a spheroidal head having a stem provided with an external screw-threaded base formed as a solid of revolution, a cylindrical chamber in said head, having its axis normal to the axis of said stem and provided with an axial outlet, a port leadin through said stem tangentially into said c iamber, a counter bore extend- -ing into said' head co-axial with said chamber presenting a tapered shoulder at itsiiunction with the wall of said chamber, an inlet member also formed as a solid of revolution, having ascreW-threaded connection with the wall of said counter bore and provided with a tapered shoulder complementary to the tapered shoulder of said head, and a tapered nozzle of relatively smaller diameter extendrlng through said chamber concentrically into said outlet, the shoulders on said head and inlet member being so located when in eng'agement as to provide a predetermined eorrelation, between the afiective area of the passage through said nozzle and that of the oiftlet.

. 7. A vaporizer head comprising a gaseous fluid delivery member and a concentric, juxtaposed, eonoidal liquid deliver having respective outlets of pre etermined means upon said members within said hea acting topositionsaid liquid delivery member concentrically of said gaseous fiuid deliverymember and operable when engaged to es"- tablish a relation between the outlets of said ,members, which will produce predetermined capacity of va orization at aepredetermined gaseous flui pressure, 6

member,

8. A vaporizer head comprising a' gaseous fluid delivery member and a; concentric; juxtaposed, cono'idal liquid ,deliver having respective outlets of pre etermined area, and shoulders'on said members. having complementary surfaces, which when ein gaged form an air-tight joint, position said liquid delivery member concentrically of said memberv gaseous fluid delivery member and operable gaseous fiuld delivery said respective mem ing a conoidal nozzle provided with an outlet for a liquid adapted to be located concentrically in juxtaposition to the outlet in said member, and means on member concentrically of said gaseous fluid delivery member and operable when engaged to establish a relation between the outlets of said members which will produce a predetermined capacity of va orization at a predetermined gaseous flui pressure.

ers having complemen- ,tary surfaces, which when engaged form an air-tight joint, position said liquid delivery 10. A vaporizer head comprising a member having a circular chamber provided with a tangential inlet for the admission of a gaseous fluid under pressure and an axial outlet, a counterbore co-axial with said chamher having ascrew threaded wall presenting a conical shoulder at its junction with the wall of said chamber, a concentric juxtaposed conical liquid delivery member having an axial duct and provided with a screw threaded portion'engaging the screw threaded wall of said counterbore and provided with a tapered nozzle of reduced diameter extending through said chamber concentrically into said outlet, a conical shoulder on said inlet member complementary to the shoulder of said counterbore acting to osition said nozzle accurately-concentrical y of 40 said outlet and to rovide an air-tight joint.

In testimony w iereof, I have signed my name to this specification.

HERMAN FREDERICK SIMON. 

